johnson and h



i A. JOHNSON AND H. JOHNSON, OF NEW YORK, AY.

FILTEEYsToP-coox.

Specification of Letters Patent No. 5,926, dated November 14, 1848.L p

To all whom t may concern.'

Be it known that we, ABRAHAM JOHNSON and HENRY JOHNSON, of the city, county, and State of New York, have invented new i and useful Improvements in the Filter and' Cock for -Filtering and Drawing Water, and

that the followingis a full, clear, and exactr` description of the principle orcharacter, which distinguishes them from all f-other things before known and of the manner of making, constructing, and using the same, reference being had tothe accompanying drawings, making part of this specification, in which" y Figure l is an elevation; FigpQ, a vertical sectionv with the parts in the position required for drawing unfiltered water; Fig. V3,

l a like section with theparts reversed to pass l water through the filtering medium; Fig. 4, a like section to representl the parts when drawing filtered water in the reverse direction; Fig. 5, a plan of the' cock;A and Fig. 6, a horizontal section of the central pipe; Fig. 7 a horizontal section on the line (B o) of Fig. 4, and Fig. 8, a cross section on (Aa) of Fig.'4.,

rI he same letters indicate like parts in all the figures.

The object of our invention is to make an apparatus to be applied to water pipes for the drawing of water with or wit-hout being filtered and for reversing the current of water through the filtering medium for cleansing it of the impurities deposited in filtering the water.

The filter consists of a cylindrical case with a filtering diaphragm within it so placed as to have a chamber above and one below it, and through the center of this case passes a pipe the upper end of which is tapped that it may be screwed onto a water pipe, and to its lower end is adapted a two way cock, the firstaperture of which enters t-he center and passes out at the side, and the second enters by the-side and passes out through the bottom. And our invention consists, in combination with such a two way cock, making the said central pipe with four passages, the first in the center to receive the water from the water pipe and passing down to the central aperture of the cock, so that in one position the water runs laterally to the second hole in the central pipe which runs up parallel with the first to discharge the water in the upper chamber, which then, without being filtered enters the third aperturepsiinilar -to'the second, but onthe other side atfonethirdof the circle from it, the lower end of which communicates with the second passagel in the two way Acockto be discharged without being'fltered. And when the cock is turned` y"one thirdgaroundv from the position der scribed,the water passes down the V,Central hole, thence laterally through the first passage in the cock tothe third hole in the centralpipe yand up thisto the upper chamber,

dium to the lower chamber, passes from this to the fourth hole in thecentral pipe which leads it to the second aperturezin the cock to be 4discharged in afiltered state. y And and afterpassing'. through the filtering me- ,g

when the vcock s turned still another third round the waterpasses down .the central hole, then laterally throughfthewfirst aperture in the cock, through thefourth hole inl the central pipe to the .lower Chamberland after being filtered by passing'up lthrough the filtering medium it passes down from the upper chamber through the second hole andout through the second aperture of the cock, this latter direction of the` water Ihaving the eect to cleanse the impurities from the filtering medium.

In the accompanying drawings m) represents a metal cylinder or case with two heads (m) and (m2), within which is secured a filtering diaphragm (Bf) of any desired construction of such thickness as to leave a' chamber (a) above and (a) below it. direction of its aXis is adapted a central pipe (d) tapped at the upper end that it 'may be secured to a water pipe, and its lower end has a conical cavity to receive To the center of this case and in the.

so "y the upper end of a two way cock (C) fitted y to it with a ground joint, and secured to itby -means of a capnut` (T) embracing a shoulder of the cock and having a hole through it for the passagek of vthe nozzleof the cock which has a key (S)y adapted tov it for the purpose of turning 1t. l

The central pipe has four passages in it;

No. 1 passes through it cent-rally; No. 2

passes up from the lower end parallel with No.1 to near the top where it turns to com-k municate with the upper chamber (a) No.

3 is similar to No. 2', and No. 4 passes up from the bottom and turns to communicate with the lower chamber (a). The four all open through the bottom, and number 1f J alone passes out through the top to receivev water rom'the water pipe.r Nos. 2, 3, and 4, are arranged around the center and at equal distances apart, and therefore dividing the circle into three equal parts.

The cock (C) has two passages in it-the rst number 5 enters the center of the apeX of the cone and passes'out at the side atlthe of the central pipe, passage 6 'of `the cock with 3 of the pipe, that the water will pass down 1, through 5,v up 2, to the upper chamber (a), andv thence down 3 and out 6 in an unfiltered state.v If turned one third around so as to connect 1 and 3 of the central pipe with 6`of the cock that the water will pass down 1 up 3 to the chamber (a), thence through` the iltering medium to the lower;v chamber (a), and thence out'in a filtered state through 4 and 6. And if turned still diaphragm, is-

another third around Vso as to connect 1 and t of the pipe, and 3 of the pipe with 6 of the cock that the lwater, will pass `to the lower chamber (a), pass up through the ltering medium, and thence be discharged in a filtered state from the upper chamberthrough `(3') vand (6). v rlhe position-of these various passages may be reversed so long as they retain the same relative positions.`

. What we claim as our invention and desire to secure by Letters Patent in a filtering apparatuswhaving two water chambers, one above andthe other The central Vpipe with ffour passages, arranged" substantially as herein described, in

combination with the two .way cock,` the V'passages :ofwhich are arranged a substantially as herein described, for the purposeioil drawing ltered or unfiltered water and reversing thedirection of :the Vcurrent through the filtering medium for the cleansing thereof, as herein described.

ABRAHAM JOHNSON.

p 4 p HENRYv JOHNSON. Vitnesses: f y i A. B.` BRowNE, E. A. PETERS.

`below `the ltering 

